Ighashgpu and Cracking NTLM Hashes

by Ryan 8. June 2012 19:20

Neat Fact of the Day:  Given an NTLM hash, the video card in my PC can attempt 1.5 - 2 Billion password attempts per second to crack that hash with brute-force, versus 9 million passwords per second with my CPU.

Video Card: Nvidia GTX 560 Ti (384 cores) using ighashgpu.

CPU: Intel i5 2500k @ 3.5GHz (4 cores)

Lesson learned: CUDA is freaking awesome. I can crack the NTLM hash of a 10-character password consisting only of digits in under five seconds.

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About Me

Name: Ryan Ries
Location: Texas, USA
Occupation: Systems Engineer 

I am a Windows engineer and Microsoft advocate, but I can run with pretty much any system that uses electricity.  I'm all about getting closer to the cutting edge of technology while using the right tool for the job.

This blog is about exploring IT and documenting the journey.


Blog Posts (or Vids) You Must Read (or See):

Pushing the Limits of Windows by Mark Russinovich
Mysteries of Windows Memory Management by Mark Russinovich
Accelerating Your IT Career by Ned Pyle
Post-Graduate AD Studies by Ned Pyle
MCM: Active Directory Series by PFE Platforms Team
Encodings And Character Sets by David C. Zentgraf
Active Directory Maximum Limits by Microsoft
How Kerberos Works in AD by Microsoft
How Active Directory Replication Topology Works by Microsoft
Hardcore Debugging by Andrew Richards
The NIST Definition of Cloud by NIST


MCITP: Enterprise Administrator

VCP5-DCV

Profile for Ryan Ries at Server Fault, Q&A for system administrators

LOPSA

GitHub: github.com/ryanries

 

I do not discuss my employers on this blog and all opinions expressed are mine and do not reflect the opinions of my employers.